Joseph b



(m-Mm J. B. MERRIAM,

' BLIND HINGE. I N0. 295,034. Patented Mar. 11, 1884.

I NITE 'IA'IES PATENT rricn.

J O SEPH B. MERRIAM, OF MERIDEN, CONNECTICUT, ASSIGNOR OF ONE-THIRD TO EVERETT B. RICHMOND, OF SAME PLACE.

BLIND-HINGE.

SPECIFICATION forming part of Letters Patent No. 2 95,034,dated March 11, 1884.

. Application filed October 1, 1883. N0 model.)

To all whom it may concern.-

Be it known that I, JosEPH B. MERRIAM, of Meriden, in the county of New Haven and State of Connecticut, have invented a newImprovement in Blind-Hinges; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a side View of the two parts in working position; Fig. 2, a perspective view of the socket part of the hinge turned onequarter over to show the opening in front of the plate F; Fig. 3, a perspective view of the stud or pivot part; Fig. 4, a vertical central section of the hinge, showing it in position as the pattern in the nowel or flask; Fig. 5, a vertical section cutting through the two parts of the arm in front of the plate F; Figs. 6 and 7, perspective Views of the two parts of the hinge as usually constructed.

This invention relates to an improvement in u that class of hinges for blinds and shutters in which the one part is constructed with a conical-shaped stud and the other part with a corresponding socket, the said stud and socket forming a pivot upon which the hingewill turn, and each part constructed with a shoulder eccentric to the pivot, the two shoulders inclined upon their back, and so that as the blind is thrown open one shoulder will ride over the other and the two shoulders engage to hold the blind in the open condition.

As heretofore constructed, the parts of these hinges have consisted of a plate, A, with an arm, B, projecting at right angles therefrom and about midway of the height of the plate that is, so as to leave a portion of the plate above and a portion below the arm-one of the arms constructed with a conicalrshaped stud,'O, the other with a corresponding conical socket, D, and so that the two would set together, and the socket and stud would form a pivot upon which the hinge would turn and allow a certain amount of freedom. On the same arm of each part a shoulder, E, is formed, the one the reverse of the other, and both inclined upon their back, and so that when the hingeis thrown to the open position the shoulder of one part will ride over and engage the shoulder of the other part. The plates A are provided with holes, through which screws are inserted. In the'usual construction of these hinges they are necessarily molded with the plate vertical that is, the division of the flask is in the plane of the projecting arm B. A certain amount of draw is therefore necessary upon the back of the plate A, and which prevents the making of that plate in a perfect plane throughout. Again, after casting, it is necessary to drill the holes in the plate. I Unless the metal be .of the very finest quality, the plate A will be so hard as to make drilling impracticable. In the manufacture of these hinges very many parts are lost because of the plate being too hard to drill or being broken in drilling. To overcome these difficulties, hinges have been made with the arm at the extreme lower end of their respective plates, and so that the screw-holes for securing the parts are entirely above the arm and so as to be formed in the process of molding; but this construction takes away from the arm any brace-like support from beneath.

The object of my invention is to construct in two parts, G G, each being of sufficient depth to give the required strength, and of a bracelike form, as seen in Fig. 1. The edges of the plate F are curved or contracted below the upper or working surface of the arm, and the arms follow that curve, so that upon the inside their. surfaces gradually approach each other, but so as to leave an opening, H, entirely through between them. These parts extend forward, and are brought together, as at I, between the socket J and the shoulder L. The socket or pivot, as the case may be, and the shoulders have substantially the same relation to the plate and to each other as in the t previous construction. i

The pattern is constructed with screw-holes a, in the usual position for the serew-holes that is, both above and below the working plane of the armthe holes being countersunk. as seen in Fig. t.

To mold the hinge, the pattern is set as seen 1 in Fig. -t-, the line ot'division between thenowel and cope indicated in Fig. 4. The sand from the nowel extends up into the opening H between the two parts G, and so as to fill the countersink of the holes a. The sand in the cope fills upon the hack of the plate; then when the cope is lifted from the nowel the pattern is readily drawn from the sand, as seen in broken lines, Fig. 4, leaving cores for the holes a. By this construction I am enabled first to make the back of the plate F perfectly flat, whereby the plate itself will tit the surface to which it is to be attached, and am also enabled to form the screw-holes in the process of casting, whereby the necessity of 2 drilling is avoided; and 1 also, by the constrnetion, produce a stronger hinge, from the l fact that the two parts G form a brace-like I support for the arm, readily formed in the i process of casting, and the opening H between i them provides a convenient escape for water I l and ice, which would otherwise accumulate 011 the lower part of the hinge. I am also enabled to use a much cheaper grade of iron in casting than can be used in previous constructions where drilling is required.

In this general description of the invention 1'. have referred to that part of the hinge in which the socket J is formed; but it will be.

understood that the other part of the hinge is of the same shape, except that instead of the socket or recess J a corresponding conical projection is made on the arm. as indicated in broken lines at d, Fig. 4, and as seen in Fig. 3: and it will also be understood that in using the word below I have done so without reference to the position of the hinge when in place upon the blind or building, the parts are inverted with relation to each other.

I claim- Theherein-describedimprovementinhinges, consisting of the plates F, by which the hinge is secured, an arm extending in a plane at right angles from each of said plates and midway of the height of the said plates, the said plates contracted in width from the plane oi'the working-surface of the arm, each arm starting from its plate in two parts, G G, and coming together forward of the plates, so as'to form a brace-like support for the arm, and so as to leave an opening, H, in front of the plates between the parts G (l, the said plates F constructed with countersunk holes (6 (1, and the arms constructed, respectively, the one with a socket, J, and the other with a stud, (I, and with the loeking-shoulders L, each of said two parts of the hinge east complete in one and the same piece, substantially as described.

JOSEPH B. MERRIAM. Witnesses:

E. A. MERRDIAX, J. G. MERRLUI. 

